Self-adjusting feed roll



NOV. 29, 1932. BARBER 1,889,525

SELF ADJUSTING FEED ROLL Filed Dec. 19. 1931 INVENTOR /%M 7!. M

fi W ATTORNEYS Patented Nov. 29, 1932 i UNITED STA res PATENT OFFICEHOWARD M. BARBER, 0F LPAWCATUCK, CONNECTICUT, ASSIGNOR TOO. B. COTTRELL8c,

. SONS OOMPANY, OF WESTERLY, RHODE ISL-AND, A CORPORATION OF DELAWAREsntr-anwsrine FEED ROLL Application filed December 19, 1931. Serial No.582,066.

The object of my invention is to provide a self-adjusting feed roll ofnovel construction, which feed roll is especially adaptthickness or haveany other inequalities therein. a 1

A further object of my invention is to pro- "vide a self-adjusting feedroll comprising a shaft and one or more feed roller units adapted to beadjustablypositioned along the shaft according to varied'requirements.

1 My invention consists generally in a feed roller unit comprising afixed collar provid-' ed with a sleeve, a collar slidable onthe sleeve,7 an interposed self-adjusting or floating annular feed roller andtension means carried by the fixed collarand actingon the slidablecollar to clamp the roller between the collars with an adjusted degreeof friction, as re 'quired. Y

My invention also includesmeans for preventing rotative movementof thefeed roller with respect to itsshaft and collars where such a feature isdesired.

which: I

Fig. 1 represents one form of my feed roller unit, one-half being shownin side elevation and one-half in central longitudinal section with theunit in position'on' its shaft;-

Fig. 2 represents the roller unit in end elevation, the shaft beingshown in cross section and a portion of the slidable collar being brokenaway; 7 V

Fig. 3 represents another form of my roller unit, one-half being shownin sideelevation and one-half in central longitudinal section with theunit in position on its shaft; and

F ig.- 4 represents the unit in end elevation, the. shaft being shown111'CI'OSS sectlon and a portion ofthe slidable collar being brokenaway.

The shaft of the self-adjusting feed'roll is denoted by 1, on whichshaft any desired number of feed roller units may be mounted.

V Eachfeed roller unit comprises a fixed col-.

and the bore ofthe collar 4 with a longitudil '1 against rotativemovement thereon by any desired means, as for instance .by providing" 6the shaft with a circumferential series of longitudinal splines 6 andintermediate recesses 7 adapted to engage corresponding longitudinalrecesses 8 and'longitudinalteeth 9 along the bore of the collar and itssleeve. i 6

The collar may be secured in its desired position along the shaft bymeans of a set screw 10. This fixed collar is shown as presenting anextended I frictional bearing surface beyond its sleeve to one side ofthe annular feed" roller 5. j 1

The collar 4: may be slidably interlocked with the sleeve 3 of the fixedcollar 2, as for instance by providingthe sleeve with a key 11 nalkey-way '12.; This slidable collar a also presents anextended frictionalbearing sur- Practical embodiments of my invention are i represented inthe accompanying drawing. in

face to the opposite side of the annular feed roller5. V

The fixed collar 2 is provided with a plu-" rality of bolts 13 (three inthe present instance) which project from its inner face through theannular roller 5 and holes 14 in the slidable' collar 4 into recesses 15where 18 in the feed roller, said holes being somewhat larger than thediameter of thebolts to also permit the floating 0r yielding of theroller under a greater or lesser degree of frlction between the collars,the roller at the same time being prevented by said tension bolts fromrotative movement with respect to its shaft and collars. In this formthe face of the self-adjusting feed roller 5 may be cut away as shown at19 to clear a projecting part of the cylinder with which it coacts. Suchprojecting part may be a gripper 20 as illustrated in dotted lines onFig. 2 of the drawing. To properly balance the self-adjusting feedroller 5, I provide a slot 21 in the roller diametrically opposite thecut away portion 19.

In the form shown in Figs. 3 and 4, the bore of the feed roller isenlarged to a point beyond the tension bolts 13 sufficiently to permitthe roller to float or yield. This enlarged bore also permits rotativemovement of the roller with respect to its shaft and collars.

From the above description it will be seen that I have provided a feedroller unit which is extremely simple and which is readily adjustablenot only along its shaft but also as to its frictional contact on thefeed roller which is interposed between the fixed and slidable collarsof the unit.

It will also be seen that the tension means which acts upon the slidablecollar is carried by the fixed collar, the ends of the bolts, the

tension springs and their adjusting nuts being all housed within theslidable collar thereby eliminating projecting parts which would tend tocause damage to any material which might come in contact with the unit.

It will also be seen that in the form illustrated in Figs. 1 and 2 thebolts of the tension means serve also to prevent the rotative movementof the feed roller without affecting its floating or yielding movement.

It is evident that various changes may be resorted to in theconstruction, form and arrangement of the several parts withoutdeparting from the spirit and scope of my invention, and hence I do notintend to be limited to the particular embodiments herein shown anddescribed, but

What I claim is 1. A feed roll shaft and a feed roller unit carriedthereby comprising a collar fixed to the shaft, said collar beingprovided with a sleeve, another collar slidable on said sleeve, aself-adjusting roller interposed between said collars and tension meanscarried by the fixed collar and yieldingly engaging the slidable collarto frictionally clamp the feed roller between said collars, said tensionmeans including bolts projecting from the fixed collar into the slidablecollar, tension adjusting nuts threaded on said bolts and coil springsinterposed betwcen said nuts and slidable collar.

.2. A feed roll shaft and a feed roller unit carried thereby comprisinga collar fixed to the shaft, said collar being provided with a sleeve,another collar slidable on said sleeve, a self-adjusting rollerinterposed between said collars and tension means carried by the fixedcollar and yieldingly engaging the slidable collar to frictionally clampthe feed roller between said collars, said tension means including boltsprojecting from the fixed collar into the slidable collar, tensionadjusting nuts threaded on said bolts and coil springs interposedbetween said nuts and slidable collar, said slidable collar havingrecesses housing the projecting ends of said bolts, their nuts and saidsprings.

3. A feed roll shaft and a feed roller unit carried thereby comprising acollar fixed to the shaft, said collar being provided with a sleeve,another collar slidable on said sleeve, a self-adjusting rollerinterposed between said collars and tension means carried by the fixedcollar and yieldingly engaging the slidable collar to frictionally clampthe feed roller between said collars, said tension means including boltsprojecting from the fixed collar into the slidable collar, tensionadjusting nuts threaded on said bolts and coil springs interposedbetween said nuts and slidable collar, said roller having enlarged holesfor the passage therethrough of the said tension bolts.

4. A feed roll shaft and a feed roller unit carried thereby comprising acollar fixed to the shaft, said collar being provided with a sleeve,another collar slidable on said sleeve, a self-adjusting rollerinterposed between said collars and tension means carried by the fixedcollar and yieldingly engaging the slidable collar to frictionally clampthe feed roller between said collars, said tension means including boltsprojecting from the fixed collar into the slidable collar, tensionadjusting nuts threaded on said bolts and coil springs interposedbetween said nuts and slidable collar, said tension bolts passingthrough the bore of the said roller.

5. A feed roll shaft and afeed roller unit carried thereby comprising acollar fixed to the shaft and provided with a sleeve, another collarslidable on said sleeve and interlocked therewith, a self-adjusting feedroller interposed between said collars, tension means to frictionallyclamp the roller between said collars and means preventing rotativemovement of the roller with respect to its collars.

6. A feed roll shaft and a feed roller unit carried thereby comprising acollar fixed to the sh aft and provided with a sleeve, another collarslidable on said sleeve and interlocked therewith, a self-adjusting feedroller interposed between said collars, tension means to frictionallyclamp the roller between said collars and means preventing rotativemovement of the roller with respect to its collars, said means includinga slot in the roller and a pin projecting from one of the collars.

7 A feed roll shaft and a feed roller unit carried thereby comprising acollar fixed to the shaft and provided with a sleeve, another collarslidable on said sleeve and interlocked posed between said collars,tension means to frictionally clamp the roller between said collars andmeans preventing rotative movement of the roller with respect to itscollars, said means including a slot in the roller and a pin projectingfrom the fixed collar.

8. A feed roll shaft and a feed roller unit carried thereby comprisingfixed and slidable collars, a self-adjusting feed roller interposedbetween said collars, a portion of the periphery of the feed rollerbeing cut-away, tension means to frictionally clamp the roller betweensaid collars and means preventing rotative movement of the roller withrespect to its collars, said means including a slot in the roller and apin projecting from one of the collars.

In testimony, that I claim the foregoing as my invention, I have signedmy name this 15th day of December, 1931.

HOWARD M. BARBER.

